a)(-5/9).3/11+(-13/18).3/11 b)(2 2/15.9/17.3/32):(-3/17) 22/08/2021 Bởi Harper a)(-5/9).3/11+(-13/18).3/11 b)(2 2/15.9/17.3/32):(-3/17)
Đáp án: a)(-5/9).3/11+(-13/18).3/11 =3/11.(-13/18+(-5/9) =3/11.(-23/18) =-23/66 b)(2 2/15.9/17.3/32):(-3/17) =( 39/1360):(-3/17) =(-33/80) Bình luận
Đáp án: a) (`\frac{-5}{9}`) . `\frac{3}{11}` + `(“\frac{-13}{18}“)` . `\frac{3}{11}` = `[`(`\frac{-5}{9}`) + `(“\frac{-13}{18}“)“]` . `\frac{3}{11}` = `(“\frac{-23}{18}“)` . `\frac{3}{11}` = `\frac{-23}{66}` b) `(“2“\frac{2}{15}` . `\frac{9}{17}` . `\frac{3}{32}“)` : `(“\frac{-3}{17}“)` = `(“\frac{32}{15}` . `\frac{9}{17}` . `\frac{3}{32}“)` : `(“\frac{-3}{17}“)` = `\frac{9}{85}` : `(“\frac{-3}{17}“)` = `\frac{9}{85}` . `(“\frac{17}{-3}“)` = `-\frac{3}{5}` Bình luận
Đáp án:
a)(-5/9).3/11+(-13/18).3/11
=3/11.(-13/18+(-5/9)
=3/11.(-23/18)
=-23/66
b)(2 2/15.9/17.3/32):(-3/17)
=( 39/1360):(-3/17)
=(-33/80)
Đáp án:
a) (`\frac{-5}{9}`) . `\frac{3}{11}` + `(“\frac{-13}{18}“)` . `\frac{3}{11}`
= `[`(`\frac{-5}{9}`) + `(“\frac{-13}{18}“)“]` . `\frac{3}{11}`
= `(“\frac{-23}{18}“)` . `\frac{3}{11}`
= `\frac{-23}{66}`
b) `(“2“\frac{2}{15}` . `\frac{9}{17}` . `\frac{3}{32}“)` : `(“\frac{-3}{17}“)`
= `(“\frac{32}{15}` . `\frac{9}{17}` . `\frac{3}{32}“)` : `(“\frac{-3}{17}“)`
= `\frac{9}{85}` : `(“\frac{-3}{17}“)`
= `\frac{9}{85}` . `(“\frac{17}{-3}“)`
= `-\frac{3}{5}`